Home / 5,218.61-7,201.80-2,860.77

Finding the Fourth Proportional to 5,218.61, 7,201.80 and 2,860.77

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Solution

The fourth proportional to 5,218.61, 7,201.80 and 2,860.77 is: 3,947.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.61 : 7,201.80 = 2,860.77 : x
  2. Step 2: Convert to fraction form
    5,218.61/7,201.80 = 2,860.77/x
  3. Step 3: Cross multiply
    5,218.61x = 7,201.80 × 2,860.77
  4. Step 4: Simplify right side
    5,218.61x = 20,602,693.39
  5. Step 5: Solve for x
    x = 20,602,693.39/5,218.61
  6. Step 6: Final answer
    x = 3,947.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.